Thailand says it has bombed a logistics centre near the Cambodian town of Poipet, known for being a major casino hub and the biggest land crossing between the two countries.
The bombings come as renewed border clashes show no sign of abating.
Cambodia's defence ministry said Thai forces dropped two bombs, while the Thai side claimed it targeted a facility storing rocket systems.
The renewed fighting this month has killed at least 21 people in Thailand and 17 in Cambodia, while displacing around 800,000, officials say.
In a statement, the Cambodian defence ministry said Thai forces dropped two bombs in the area of Poipet municipality at around 11:00 am (0400 GMT) Thursday.
Shortly after, Thai Air Force spokesman Air Marshal Jackkrit Thammavichai asserted that the Thai military had attacked the center outside Poipet that had been used to store BM-21 rockets and that no civilians were harmed.
The bombings appear to be the first on Poipet, which is known for casinos popular with Thai gamblers and its international border checkpoint.
On Tuesday, Thailand reported that between 5,000 and 6,000 Thai nationals remain stranded in Poipet after Cambodia closed its land border crossings.
Cambodia's interior ministry noted that the border closures were a necessary measure to reduce risks to civilians, adding that air travel remained an option for those seeking to leave.
The century-old border dispute has dramatically escalated following a Cambondian rocket barrage into Thailand in July, leading to intense clashes.
Though a ceasefire was brokered later on, recent events suggest that hostilities continue to flare up.
Trump claimed last week that he could halt the fighting merely by picking up the phone, but violence has persisted.
Earlier this week, Cambodia accused Thai forces of bombing Siem Reap province, home to ancient Angkor temples, for the first time in this latest round.
